Several conservatives on social media have said they are attending the summit, including Bill Mitchell, a Trump supporter who hosts an online show.
Using the hashtag #BlueForSudan, activists, social media influencers and celebrities have begun a viral campaign to express solidarity for protesters in Sudan based simply around the colour blue.
Twitter has apologised for suspending a number of accounts critical of China, days before the politically sensitive 30th anniversary of the Tiananmen Square crackdown.
The African National Congress (ANC) has warned members who take their views on internal issues within the party to social media platforms that it will cause division within its ranks.
Shady middle-men are openly advertising on Chinese social media to smuggle blood samples of pregnant women to Hong Kong to skirt the mainland’s ban on gender testing, an AFP investigation has found.